Tommie Copper Men's Recovery Kick-Start Dress Crew Socks 55% Nylon, 35% Copper Nylon, 10% Spandex Made in US Comfortable compression that provides support for muscles and joints all day, every day. CopperZnergy fabric eliminates odor causing microbes on fabric. Knitted rib arch design provides added support. UPF 50+ protection from the sun's harmful UV rays. The Compression Crew Socks offer muscle support to ease general aches. Our exclusive CopperZnergy fabric, made with Cool Copper technology, eliminates odors on the fabric and keeps you cool and dry.